摘要
以沈糯509抗、不抗近等基因系为试材,研究烟嘧磺隆除草剂对玉米光合色素含量、叶片光合特性和叶绿素荧光参数的影响。结果表明,烟嘧磺隆处理使沈糯509抗、不抗近等基因系的叶绿素含量、净光合速率和PSⅡ光化学效率等均不同程度的降低,使胞间CO2浓度和非光化学猝灭系数呈升高趋势,且表现出一定的剂量-效应关系。在供试浓度范围内,抗系各参数变化幅度均小于不抗系,说明抗系具有较强的光合调节机制,用以减轻或消除烟嘧磺隆的胁迫反应。
Using Nicosulfuron-resisted and Nicosulfuron-sensitive near-isogenic lines of wax maize Shennuo R-509, S-509 as materials to research photosynthetic pigment contents, photosynthetic traits and chlorophyll fluores- cence parameters within paired near-isogenic lines. The results showed that Nicosulfuron caused the decline of pho- tosynthetic pigment content, photosynthesis rate and primary light energy in leaves of wax maize, but intercellular CO2 concentration and non-photochemical quenching increased gradually. All parameters of R-509 showed little change than S-509. It indicated that R-509 might had photosynthetic regulation mechanism in some degree under herbicide stress, and there was a certain difference between the Nicosulfuron-resisted and Nicosulfuron-sensitive near-isogenic lines in tolerating to herbicide Nicosulfuron stress.
出处
《玉米科学》
CAS
CSCD
北大核心
2014年第3期77-80,共4页
Journal of Maize Sciences
基金
"十二五"国家科技支撑计划项目"东北平原南部(辽宁)春玉米水稻持续丰产高效技术集成创新与示范"(2011BAD16B12)
辽宁省科技厅重大
重点项目"玉米高产
优质
多抗新品种选育"(011201018)
关键词
糯玉米
近等基因系
烟嘧磺隆
光合特性
荧光参数
Wax maize
Nicosulfuron
Near-isogenic line
Photosynthesis trait
Chlorophyll fluorescence parameter